new yosk



C. HAMMER.

JAR CLOSURE.

APPLICATION FILED IuNE 2u. 1918.

1 ,3 1 5, 2 3 1 Patented Spt. 16, 1919.

raannr erraten CHALES HAMEIER, OF QUEENS, NEW YORK, ASSGNOR TO AMERICANMETAL CAP' COMPANY, OF BROOKLYN, NEN YGRK, A CORPORATION F NEW YORK.

anaonosunn.

Application filed June 28, 1918.

To all whom z'zf may concern:

Be it known that CHARLES HAMMER, a citizen of the United States, andresident of Queens, in the county of Queens and State of N ew York, haveinvented certain new and useful Improvements in Jar-Closures, of whichthe following is a specication.

This invention relates to the form of caps or closures for jars, cans orother kinds of containers, wherein a part of the flange at the lowerportion has a frictional engagement with the wall of the jar or othervessel, whereby a strong and uniform engage ment therewith is provided,to securely retain the closure on the vessel.

The object of the present invention is to provide an improved form ofclosure of this character, in which an annular portion. of the margin ofthe iiange will project inwardly to have a resilient or yieldableconnection with the jar or can outer wall, and will also provide aflaring portion serving to guide the closure when iirst placed on thevessel; and which closure will have a strengthening portion at thelowermost margin; and which closure `will also present a projecting edgethat by rolling the sealed.

vessel to engage this edge, or giving a few hammer blows to such edge,the free engaging marginal portion will yield or bend and the closure.will release its strong engagement with the vessel.

A further object of the invention is to provide a closure of thecharacter set forth in which the inner marginal portion that engages thewall of the vessel, will be of a segmental form to increase thevieldahle rharacter of the engagement with the vessel.`

in' the accompanying drawing showing embodiments of my invention, Figure1 is a partial sectional view through the closure in the partly finishedcondition. Fig. 2 shows the same in the completed form. Fig. 3 shows theclosure slightly modiiied. Fig. 4 is a plan view of the closure shown inFig. 8. Fig. 5 shows the closure as lirst applied to ar. Fig. 6 showsthe closure in the 'sealed position on the jar. Fig. 7 shows the closureof Fig. 3 with ay large ring gasket. Fig. 8 'shows this form' of closuresealed on the jar. Fig. 9 is a plan view of a. modified form of closure,and Fig. 10 a. partial sectional View of the` same.

is set forth the closure is in the form of a Specification of LettersPatent.

Patented Sept. 16, 191m.

serial No. 242,396.

cap having an end wall 12 and'a continuous annular side wall 13preferably cylindrical. The lower portion of the side wall is flaredoutwardly in a conical form, as at 14:, and the marginal portion isthereupon bent inwardly, or doubled back on the flaring portion 14, toform the wall 15. in Fig. 1 the bent or doubled portion is not broughtagainst the flaring portion, but in the other views these two walls areshown as brought together or doubled. This will form a free inwardlyprojecting annular wall 16 as shown in Fig. 2, extending upwardly andalso inwardly' toward the aXis of the closure,

and offset from the cylindrical wall 18. In.-

F ig. 3 and the other views the fr ee marginal rim portion beyond thedoubled portion 14 is shown as bent toward the axis or downwardly `tomake a slight angle with the doubled portion, or with the inner wallthereof, as at 17. y

By this construction it' will be seen that the doubled portion or wall15 dares outwardly and serves to guide the closure when first placed onthe jar 18, see Fig. 5. The'l `upper edge of the jar wall will engagethe free marginal portion 17v as the closure is forced down, vand sincethis margin is free from the cylindrical wall of the closure it willstretch or reform by bending outwardly, and thereby form a very secureengagement with the outer wall 19 of the container, as

yindicated vin Fig. 6. lf desired a flat gasket 20 of suitableeompressible material may be placed in the closure to engage the outeredge of the container.

From this construction it willy be seen that this free marginal portion1.7 is strongly supported at its lower portion by the doubled Haringwalls 14 and 15, butthat it is free to yieldoutwardly and thus causeintimate engagement with the. container wall should it be somewhatirregular, or perhaps have some cavities. lt will be observed that thedoubled flange 14 projects outwardly in the sealed closure, and byapplying'pressure to the lower doubled edge either by rolling this edge,or by blows to move it inwardly, the free margin will tend to swingoutwardly toward the cylindrical wall. and act to release the closurefrom the vessel.

lt will be further seen that the lowermost portion of the container bothbefore applying and afterward, comprises a doubled porlos tion, and thiswill serve to protect the user and avoid the injury sometimes caused bya free raw ed e.

In Figs. and 8 are shown the use of a large ring washer 21 extendingdown to the Jfree llange or rim 1-7.l When this closure is applied to avessel, the gasket will be compressed and a portion of it forced downbetween the rim and the -outer wall, while the gasket will be furthercompressedbetween the top edge of the vessel and the side and top of thecontainer. This will form a very ellicien-t character of hermetic seal.

In Figs. 9 and 10 I show a closure similar to that of Fig. l3 but inwhich the free rim or margin is removed at several portions so that itis of a segmental form. But in this modification the rim comprises foursegments 22 separated by spaces 23, but the supporting doubled portions14, and 15 correspond with the other form of closure.

While the several views show my form of closure applied to the form ofjar usually termed a jelly glass, it is to be understood that thisclosure is of equal efliciency when applied to other forms of.containers, especially to metal vessels or cans of various kinds. Thehigh degree of resiliency of the free inner rim causes it to have averysecure engagement with the Wall of a metallic container.

What I claim is:

1. In a closure for containers, a cap having an annular flange. thelower portion of the llange extending outwardl in a continuous conicalform with the e ge bent back on the inner face of the conical portionand the free margin beyond the bent portion extending upwardl toward thetop, whereby to provide a yie ding rim for engagement with the outerwall of the container.

2. In a closure for containers, 'a cap having an annular flange, thelower portion of the flange extending outwardlv in a continuous conicalform with the edge doubled back on the inner face of the conical portionand the free margin beyond the doubled portion extending upwardb towardthe top and inwardly at a slig t angle with the doubled portion, wherebyto provide a yielding rim for engagement with the outer wall of thecontainer. y

3. In a closure for containers, a cap having an annular flange, thelower portion of the flange extending outwardly in a continuous conicalform with the edge bent 'back on the inner face of the conical portionand the free margin beyond the bent portion extending upwardlv towardthe top, whereby to provide a yie ding rim for engagement with the outerwall of the container, the closure having a gasket lining the innerflange wall above the said inner rim to be compressed by the containeredge on application to the container.

Lawaai lining the inner flange wall above the said inner rim to becompressed by the said rim and 'by the container edge on application tothe container.

5. In a closure for containers, a cap having an annular flange, thelower portion of the flange extending outwardly in a continuous conicalform with the edge bent back on the inner face of the conical portionand the free margin beyond the bent portion extending outwardly towardthe top in seo'- mental form whereby to provide indepen ently yieldingrim portions for engagement with the outer wall of the container.

6. In a closure for containers, a cap having an annular flange, thelower portion of the flange extending outwardly in a continuous conicalform with the edge doubled back on the inner face of the conical portionand the free margin beyond the doubled portion extending upwardly towardthe top, in segmental form that make a slight angle with the doubledportion, whereby to provide yielding rim portions for engagement withthe outer wall of the container.

7. In a closure for containers, a cap having ah annular flange, thelower portion of the flange being formed with the edge doubled back onthe inner facev of the conical portion and the free margin beyond thedoubled portion extending upwardly toward the top in segmental form thatmake a slight angle with the doubled portion, whereby'to provideindependently yielding rim portions for engagement with the outer wallof the container.

8. In a closure for containers, a cap having an annular flange, thelower portion of the flange extending outwardly 1n a continuouslyconical form with the edge doubled back on the inner face of the conicalportion and the free margin beyond the doubled portionextending u wardlytoward the top and inwardly at a slight angle with the doubled portion,whereby to provide a yieldinof rim for engagement with the outer wall othe container, and a closure having a gasket lining the inner flangewall above the said inner rnn to be compressed by the container edgeonapplication to the container.

9. In a closure for containers, a cap having an annular flange, thelower portion of the flange extending outwardly 1n a continuous conicalform` with the edge bent back' on the inner face of the conical portionand the free margin beyond the bent portion extending outwardly towardthe top in segmental form whereby to provide independently yielding rimportions for engagement with the outer wall of the container, and aclosure having a gasket lining the inner flange wall a'bove the saidinner rim to be compressed by the container edge on application to thecontainer.

10. In a closure for containers, a cap having an annular flange, thelower portlon of the fiange extending outwardly in a continuous conicalform with the edge doubled back on the inner face'of the conical por-vtion and the free margin beyond'the doubled portion extending u wardlytoward the top, 1n 'se ental form hat makesa slight angle wit thedoubled portion, whereby to provide yielding rim portions vforengagement withthe outer wall of the container, and a closure having aket lining the in ner fiange wall above t e said inner rim to becompressed by the container, edge on application to the container.

Signed at New York city, N. Y. on J une 26th,1918.

CHARLES Hai/MER.

